﻿A. 
  Cary 
  — 
  Geological 
  facts 
  on 
  Grand 
  River, 
  Labrador. 
  419 
  

  

  question 
  whether 
  the 
  superposition 
  of 
  the 
  lava 
  on 
  the 
  sand- 
  

   stone 
  is 
  due 
  to 
  its 
  having 
  flowed 
  over 
  it, 
  or 
  to 
  a 
  reversed 
  fault. 
  

   In 
  connection 
  with 
  the 
  above 
  it 
  may 
  be 
  pointed 
  out 
  that 
  the 
  

   eastern 
  sandstone 
  on 
  Traverse 
  Island, 
  in 
  Keweenaw 
  Bay, 
  was 
  

   found 
  by 
  the 
  Michigan 
  Geological 
  Survey 
  to 
  dip 
  westerly 
  at 
  

   an 
  angle 
  of 
  from 
  five 
  to 
  fourteen 
  degrees, 
  and 
  that 
  the 
  present 
  

   writer 
  showed 
  that 
  the 
  eastern 
  sandstone 
  in 
  the 
  vicinity 
  of 
  

   Torch 
  Lake, 
  generally 
  dipped 
  from 
  five 
  to 
  twenty 
  -three 
  de- 
  

   grees 
  northwesterly 
  toward 
  the 
  copper-bearing 
  series, 
  and 
  that 
  

   it 
  actually 
  passed 
  under 
  the 
  lava 
  flows. 
  

  

  I, 
  lava 
  flows; 
  c, 
  cherty 
  bands; 
  s, 
  s, 
  indurated 
  sandstones 
  

  

  The 
  above 
  observations 
  would 
  go 
  to 
  show 
  that 
  the 
  lava 
  

   flows 
  of 
  the 
  " 
  South 
  Trap 
  Range," 
  east 
  of 
  Lake 
  Gogebic 
  do 
  

   not 
  dip 
  at 
  a 
  high 
  angle, 
  as 
  has 
  been 
  generally 
  asserted, 
  and 
  

   further 
  that 
  the 
  eastern 
  sandstone 
  is 
  not 
  horizontal, 
  as 
  has 
  

   been 
  generally 
  stated, 
  but 
  that 
  the 
  two 
  dip 
  at 
  a 
  low 
  angle, 
  

   generally 
  5° 
  to 
  20°. 
  These 
  observations 
  also 
  indicate 
  that 
  the 
  

   eastern 
  sandstone, 
  and 
  the 
  lava 
  flows 
  of 
  the 
  South 
  Trap 
  Range 
  

   are 
  one 
  formation, 
  and 
  are 
  as 
  conformable 
  as 
  eruptions 
  of 
  lava 
  

   can 
  be 
  with 
  a 
  contemporaneous 
  sedimentary 
  deposit. 
  

  

  The 
  study 
  of 
  the 
  South 
  Trap 
  Range 
  will 
  be 
  continued. 
  

  

  Michigan 
  Mining 
  School, 
  Houghton, 
  Mich., 
  October 
  1st, 
  1891. 
  

  

  Art. 
  XLYI. 
  — 
  Geological 
  Facts 
  noted 
  on 
  Grand 
  River, 
  Lab- 
  

   rador 
  ;* 
  by 
  Austix 
  Gary. 
  

  

  The 
  map 
  of 
  Labrador 
  shows 
  on 
  its 
  eastern 
  coast 
  one 
  deep 
  

   indentation. 
  This 
  body 
  of 
  water, 
  comprised 
  of 
  Hamilton 
  inlet 
  

   and 
  Lake 
  Melville, 
  is 
  140 
  miles 
  long 
  in 
  all, 
  and 
  washes 
  at 
  

   almost 
  every 
  point 
  the 
  Archaean 
  rock 
  of 
  the 
  country. 
  

  

  *Prof. 
  Leslie 
  A. 
  Lee 
  in 
  planning 
  the 
  Bowdoin 
  expedition 
  to 
  Labrador 
  the 
  past 
  

   summer 
  determined 
  to 
  send 
  a 
  party 
  up 
  the 
  Grand 
  River 
  to 
  investigate 
  its 
  falls 
  

   and 
  obtain 
  such 
  scientific 
  information 
  as 
  might 
  be 
  possible. 
  This 
  paper 
  embodies 
  

   the 
  geological 
  facts 
  noted 
  by 
  that 
  party. 
  Their 
  meagerness 
  and 
  lack 
  of 
  detail 
  

   must 
  be 
  largely 
  attributed 
  to 
  the 
  hurried 
  nature 
  of 
  the 
  trip 
  and 
  the 
  serious 
  acci- 
  

   dents 
  met 
  with. 
  

  

  